Sharpening device with adjustable work support guides



1386- 151552 B. K. MURC HISON 2,621,547

SHARPENING DEVICE WITH ADJUSTABLE WORK SUPPORT GUIDES Filed Nov. 16,1951 I 4 Sheets-Sheet l INVENTOR. -2

BLACKWELL K. MURCI'HSON TTORNEY B. K. MURCHISON Dec. 16, 1952SHARPEINING DEVICE WITH ADJUSTABLE WORK SUPPORT GUIDES Filed Nov. 16,1951 4 Sheets-Sheet 2 INVENTOR. BLACKWELL a.

MURCHLSON ATTORNEY Dec. 16, 1952 u c lso 2,621,547

SHARPENING DEVICE WITH ADJUSTABLE WORK SUPPORT GUIDES Filed Nov. 16,1951 4 Sheets-Sheet 3 JNVENTOR.

BLACKWELL K. MURCHISON I5 I7 E ATTORNEY Dec. 16, 1952 u c so 2,621,547

SHARPENING DEVICE WITH ADJUSTABLE WORK SUPPORT GUIDES Filed Nov. 16,1951 4 Sheets-Sheet 4 INVENTOR.

BLACKWELL K. MURCHISON ATTORNEY Patented Dec. 16, 1952 UNITED STATESTENT OFFICE SHARPE-NING DEVICE WITH ADJUSTABLE WORK SUPPORT GUIDES 11Claims.

This invention-relates to newv and useful improvements in sharpeningdevices with adjustable work. support: guides.

More particularly, the invention proposes a work support; guide having ahorizontal work support. face normally positioned substantiallytangential of: the. top point of theperiphery of a driven cylindricalsharpener wheel. A novel construction and: arrangement is proposed bywhich said work support guide may be tilted to selected angularpositions in order to hold the work at-selected angularpositions inrelation to hesperiphery'of said sharpener. The new work support; guideis particularly intended for cut-- tin rinding; honing: and finishing ofknives, scissors, cleavers, razors, and many other articles.

More specifically-it-is proposed to provide the work support guide witha vertical flange extending parallel, to the: axis of rotation of saiddriven cylindrical sharpener wheelandisaid flange to be pivotallysupported upon an axis at right angles to said first mentioned axis in.order that said work guide may be tilted about said second mentionedaxis tovary-saidhorizontal work support face to' various angularpositions in relation to the top point of the, periphery of saidsharpener wheel.

A- still further object of this. invention resides in notching out thecentralsection of the work support guideso that the sharpener wheel isreadily accessiblein the various tilted positions of the work supportguide.

Still another object of this invention resides in providing the saidflange of the work support guide with a circular platehaving gear teethalong its edge coaxially mounted onsaid flange, and providing a pinionmeshing; with, said gear teeth, and turning means for turning saidpinion.

Another object of this invention resides in characterizing the turningmeans; supra, by arod supporting said pinion, a radial handle on saidrod, andan arrangement for holding said radial handle in various turnedpositions for controlling the. turned positions ofsaid flange.

Still another object of-this invention resides in the provisionof aresiliently mounted-Work guiding head adjustably supported upontheefiange of said work support guide and normally positioned abovesaiddriven cylindrical sharpener wheel for assisting in guiding work againstsaid sharpener wheel;

More specifically, it is proposed that said guiding head be supported ona resiliently mounted plunger. which in turn. is supported on adjustable2; arms in order that the guiding head may be moved into and out ofoperative positions so that itmay be used when desired and also idled.

A. further object of this invention. resides in mounting said adjustablearms on a vertical stem which is turnably mounted in order that saidad'- justable arms may be movedto variouspositions. Meansv is alsoproposed for locking said stem in selected turned positions forcorrespondingly holding said adjustable arms.

Still further the invention proposes a sharpening devicewith anadjustabl'e'work, support guide and: a cooperative work guiding headwhich may be manufactured and sold.- atareasonable-v cost.

For further comprehension, of the invention, andaof theobjects andadvantages thereofireference will be had to the following descriptionand accompanying drawings, and to the appended claims in which thevarious novel. features of the invention are moreparticularly set forth.

In the accompanying drawings forming, amaterial' part of thisdisclosure:

Fig. 1 is a plan view of: a-sharpening devicewith anv adjustable work;support guide and: cooperative work'guiding head constructed inaccordance with this invention.

Fig. 2 is a fragmentary front elevational view of Fig. 1.

Fig. 3 is an end view of Fig. 1 looking from the right hand end.

Fig. 4 is a fragmentary rear view looking in the direction of the line4-4 of Fig. 3.

Fig. 5' is a fragmentary longitudinal vertical sectionalview taken onthe'line- 5-5 of Fig. 1.

Fig, 6 isa fragmentary transverse vertical sectional View taken on theline 6'-6 of Fig. 1.

Fig. '7 is a fragmentary horizontal sectional view taken on the lineL-Iof Fig. 6-.

Fig; 8 .is.a fragmentary transverse: vertical'sectional' view taken onthe line. 8--8-of Fig; 1.

Fig. 9 is a fragmentaryvertical sectional view taken on the line 9-9 ofFig; 1.

Fig. 10 is a fragmentaryelevationalview similar to Fig. 2 butillustrating the adjustable work support guide and: cooperativework'guiding head in a difi'erentuposition of "adjustment.

The sharpener device with adjustable work support guide, in accordancewith this invention, includes a driven cylindrical sharpener wheel [0having a horizontal axis of rotation coinciding with the axis of ahorizontal shaft l I upon which the-wheel H3 is fixedly mounted. Thesharpener wheel It has a sharpening periphery'formed by the outer edgesof a plurality of radial cutters l2 which are fixedly mounted on acylindrical body H of the wheel Hi. These radial cutters l2 extendparallel to the axis of the sharpener wheel I8. Preferably, the cutters|2 are formed from "Carboloy or other hard materials. The shaft H isrotatively supported in spaced standards l4 which are formed on a framel5 mounted on a body It for the sharpening device. The body l5 has ahorizontal top wall I] upon which the frame I5 is fixedly mounted.

The body It also has a hollow base portion l8 provided at the bottomwith flanges |9 by which the body |5 may be attached to a Work table orother stationary part. The body I6 is also provided with shield-like endportions 28 engaging upon the end portions of the shaft One of theseshield-like end portions 20 has a removable end plate 2| to give accessto a drive pulley 22 mounted on the shaft The drive pulley 22 is drivenby a belt 23 which engages a small pulley 24 upon the shaft of anelectric motor 25 which is mounted within the hollow base portion l8. Acollar 26 is removably mounted on the shaft outside of one of thestandards M for holding the shaft i from moving sidewise in conjunctionwith the pulley 22 which engages against the other standard l4.

A work support guide 33 having a horizontal work support face 3| isnormally supported substantially tangential of the top point of theperiphery of said sharpener wheel by a vertical flange 32. Morespecifically, the vertical flange 32 is pivotally mounted upon a stud 33which forms its axis. This stud 33 is mounted on a projection 34 fromthe frame I5. The work support guide 30 is formed with a notched outcentral section 35 (see Fig. 1) in order to make the top portion of thesharpener Wheel l0 readily accessible to work placed on the work supportguide 36. The work support guide 30 also is formed with inclined sides36 in order to reduce the width of the front portion thereof tofacilitate tilting of the work support guide 30. The notched out centralsection 35 extends along the sides of the sharpener wheel as. A frontguard 37 is also mounted upon the frame and extends over a top portionof the sharpener wheel ID in order to protect the fingers of an operatorof the sharpening device from accidental injury. This front guard 37 ispositioned on the opposite side of the sharpener wheel I 5 to that heldby the work support guide 30.

The flange 32 is associated with means by which it may be adjusted tovarious turned positions upon its axis, namely, the pivot 33. Thisadjusting means includes a circular plate 38 having a series of teeth 39along its bottom edge. This plate 33 is fixedly attached to the flange32. A pinion 45 meshes with the teeth 39, and said pinion 40 is mountedupon a rod 4| which is turnably mounted through the frame i5. A radialhandle 42 is mounted on the end of the rod 4| which is remote from thepinion 4B. A plate 43 is attached to the frame I5 adjacent the handle42. A plunger &4 is mounted on the handle 42 and is urged into an inwardposition by a leaf spring 45. The inner end of the plunger 42 isengageable with one of a series of openings 46 formed in the plate 43upon an arc coaxial with the rod 4|. The leaf spring 45 is attached atits bottom end by a set screw 41 to a bottom portion of the handle 42.The leaf spring 45 extends into a slot 48 formed in the top portion ofthe handle 42. The top end of the leaf spring 45 engages through a smallopening in the plunger 44 in order that the leaf spring 45 may urge theplunger 44 towards the openings 46. The

plunger '44 is provided with a knob 49 by which it may be easily moved.The handle 42 may be turned to various positions in order to turn therod 4| and pinion 40 which will turn the plate 38, the flange 32, and inthis Way the work support guide 35.

A resiliently mounted work guiding head 50 is adjustably supportedindirectly upon the flange 32 and normally is positioned over thesharpener wheel ID. More specifically, the work guiding head 50 ismounted upon a vertical plunger 5|. This plunger 5| engages through atubular portion 52 upon the end of a radial arm 53. A collar 54 ismounted upon the top of the plunger 5|. A coaxial spring 55 is mountedupon the bottom portion of the plunger 5| and acts between the tubularportion 52 and the head 50 for resiliently urging the head 50 into adownward position.

The radial arm 53 is horizontally pivotally mounted upon a horizontalflange 56. The horizontal flange 56 is fixedly mounted on a verticalpost 57. The fiange 56 is provided with a peripheral cutout 58. A pin 59is mounted on the radial arm 53 and engages the cutout 58 the ends ofwhich limit horizontal pivoting of the radial arm 53. The post 57 isprovided with a top stud 50 equipped with a clamp nut 6|. by which theradial arm 53 may be stationarily clamped on the flange 58. The verticalpost 57 is fixedly mounted upon the outer end of another radial arm 62.This radial arm 62 also works in a horizontal direction. It is fixedlymounted on a vertical stem 63 which is turnably mounted upon ahorizontal tube 64 which is coaxial with the flange- 32. This tube 64 isfixedly attached to the plate 38 in order to turn as the plate 38 isturned. The horizontal tube 64 is provided with a recess 65 in which thehead of the stud 33 engages.

Means is provided for locking the vertical stem 63 in selected turnedpositions. This means includes a. plunger 66 engageable selectively withopenings 67 and 63 formed in the stem 63. The plunger 66 is slidablymounted through a nut 69 threadedly' engaged on a tube 70 which ismounted upon the outer end of the horizontal tube 64. The plunger 66 isprovided with an enlarged portion 7| which is engaged by an expansionspring 72 housed within the tube 70 and acting between the portion 7|and the nut 69, for normally urging the plunger 66 inwards. The outerend of the plunger 66 is provideid with a head 73 by which it may beopera e The operation of the device may be understood from thefollowing:

The sharpener wheel I0 is rotated by the electric motor 25 which drivesthe shaft ll upon which the sharpener wheel H) is mounted. The worksupport guide 30 is in a normal or neutral position when its supportface 3| is in a horizontal position. It is illustrated in this" neutralposition in all of the figures of the drawingexcept Fig. 10, in which itis shown in a tilted position. A knife or other piece of Work to besharpened may be rested upon the work support face 3| of the guide 30,as indicated by the dot and dash lines A in Fig. 2. However, in thehorizontal position of the support guide 30, merely the faces of thework A may be brought into contact with the sharpener wheel H] which atits top projects very slightly above the support face 3|.

If it is desired to sharpen or cut the beveled edges of the work A it isnecessary that the work support guide 31 be tilted to a selected angle.It may be tilted by gripping the handle 49, pulling the plunger M outfrom one of the openings 4%, and then turning the handle 42 to a desiredselected position and re-engaging the plunger 44 into another one of theopenings it. When the handle 42 is turned, motion will be transmitted tothe rod M, the pinion 4!], the plate 38, the flange 32, and thus to thework support guide 3 I. In Fig. the work support guide 3!] isillustrated in an inclined position. The dot and dash lines B illustrateanother piece of work rested on the work support guide 39 and in aposition in which one side of the bevel of the work B engages againstthe top of the sharpener wheel {6. The work B may be moved transversely,that is, in a direction at right angles to the axis of the sharpenerwheel Iii. When thus moved the longitudinal edge of the work 13 will bemoved across the top portion of the sharpener wheel it) which sharpens,cuts, or treats the edge of the work B.

The resiliently mounted work guiding head 50 normally engages againstthe work B and assists in properly supporting the work as it is movedacross the sharpener wheel id. The bottom face of the work guiding head5% is rounded in order that the work B may be properly engaged betweenthe head 50 and the guide 36. Whenever desired the Work guiding head 5!!may 'be swung to an inoperative position, as for example, indicated bythe dot and dash lines C in Fig. 1. In order to so swing the guidinghead 50 it is merely necessary to first loosen the clamp nut 6! and thenpivot the radial arm 53 to a position in which the pin 59 on the radialarm 53 strikes the other end of the cutout 58 formed in the flange 55.The radial arms 62 and 53, as illustrated by the full lines in Fig. 1,are shown directed towards the right. When these arms are in thisposition the work is moved transversely across the left hand portion ofthe sharpening device.

When it is desired to sharpen the other side of the bevel of the work 13it is necessary that the radial arms s2 and 53 he swung over towards theleft. This is done by first gripping the knob 13 and pulling outwards onthe plunger 66 to free the stud 63. Now the arm E52 may be swung over tothe left, as indicated by the dot and dash lines D. The arm 62 is lockedin this position by releasing the head l3 so that the spring 62 mayengage the plunger in the opening 68, see Fig. 7. Now the arm 53 may bemoved to a position in which the work guiding head 53 is over thesharpening Wheel H), as illustrated by the dot and dash lines E. Ifdesired, the radial arm 53 may be swungbackwards to an inoperativeposition corresponding with the position indicated by the dot lines inFig. l which are referred to by the reference letter C. When the arms 62and 53 are directed towards the left the work may be moved transverselyacross the sharpening device in a right hand position.

It should be particularly noted that because the Work guiding head 53 isindirectly mounted :on the flange all adjustments of the Work supportguide it will be transmitted to the work guiding head 56 so that thework guiding head 50 is always adjacent the work guiding support 30 andready to assist in guiding a knife or other piece of work beingsharpened, out or treated on the sharpening device.

While I have illustrated and described the preferred embodiment of myinvention, it is to be understood that I do not limit myself to theprecise construction herein disclosed, and the right is reserved to allchanges coming within the scope of the invention as defined in theappended claims.

Having thus described my invention, what I claim as new and desire tosecure by United States Letters Patent is:

1. A sharpening device with an adjustable Work support guide, comprisinga driven cylindrical sharpener wheel having a horizontal axis ofrotation and a sharpening periphery, a Work support guide having ahorizontal work support face normally positioned substantiallytangential of the top point of said periphery and also having a verticalflange extending parallel to said axis and pivotally supported upon anaxis at right angles to said first mentioned axis in order that saidWork guide may be tilted about said second mentioned axis to vary saidhorizontal work support face to various angular positions in relation tothe top point of said periphery, means for adjusting said flange tovarious turned positions upon said second mentioned axis, and aresiliently mounted Work guiding head adjustably supported upon saidflange and positioned over said wheel.

2. A sharpening device as defined in claim 1, in which said horizontalwork support face has a notched out central section through which saidsharpener wheel is accessible.

3. A sharpening device as defined in claim 1, in which said vertica1flange is pivotally supported upon a horizontal pivot.

i. A sharpening device as defined in claim 1, in which said means foradjusting said flange, includes a circular plate with gear teeth alongits edge coaxially mounted on said flange, a pinion meshing with saidgear teeth, and turning means for turning said pinion.

5. A sharpening device as defined in claim 4, in which said turningmeans includes a rod supporting said pinion, a radial handle on saidrod, a stationary plate with a series of openings coaxially of said rod,and a plunger on said radial handle engageable selectively with saidopenings.

6. A sharpening device as defined in claim 5, in which a spring urgessaid plunger into said openings.

7. A. sharpening device as defined in claim 1, in which said workguiding head is mounted on a resiliently supported plunger.

8. A sharpening device as defined in claim 1, in which said work guidinghead is supported on a resiliently mounted plunger, and said plunger issupported on adjustable arms.

9. A sharpening device as defined in claim 8, in which said adjustablearms are mounted on a vertical stem turnably mounted.

10. A sharpening device as defined in claim 9, in which said verticalstem is associated with means for locking said stem in selected turnedpositions.

11. A sharpening device as defined in claim 10, in which said means forlocking said stem includes a spring pressed plunger engageable withopenings in said stem.

BLACKJVELL K. MUBCHISON.

No references cited.

